* Unbuffered io for ffmpeg system
* Copyright (c) 2001 Fabrice Bellard
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-/* needed for usleep() */
-#define _XOPEN_SOURCE 600
#include <unistd.h>
+
#include "libavutil/avstring.h"
#include "libavutil/opt.h"
#include "os_support.h"
#endif
#include "url.h"
-#if FF_API_URL_CLASS
/** @name Logging context. */
/*@{*/
static const char *urlcontext_to_name(void *ptr)
else return "NULL";
}
static const AVOption options[] = {{NULL}};
-static const AVClass urlcontext_class =
- { "URLContext", urlcontext_to_name, options, LIBAVUTIL_VERSION_INT };
+static const AVClass urlcontext_class = {
+ .class_name = "URLContext",
+ .item_name = urlcontext_to_name,
+ .option = options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
/*@}*/
-#endif
static int default_interrupt_cb(void);
const char *avio_enum_protocols(void **opaque, int output)
{
- URLProtocol **p = opaque;
- *p = *p ? (*p)->next : first_protocol;
- if (!*p) return NULL;
- if ((output && (*p)->url_write) || (!output && (*p)->url_read))
- return (*p)->name;
+ URLProtocol *p = *opaque;
+ p = p ? p->next : first_protocol;
+ if (!p) return NULL;
+ if ((output && p->url_write) || (!output && p->url_read))
+ return p->name;
return avio_enum_protocols(opaque, output);
}
return 0;
}
-#if FF_API_REGISTER_PROTOCOL
-/* The layout of URLProtocol as of when major was bumped to 52 */
-struct URLProtocol_compat {
- const char *name;
- int (*url_open)(URLContext *h, const char *filename, int flags);
- int (*url_read)(URLContext *h, unsigned char *buf, int size);
- int (*url_write)(URLContext *h, unsigned char *buf, int size);
- int64_t (*url_seek)(URLContext *h, int64_t pos, int whence);
- int (*url_close)(URLContext *h);
- struct URLProtocol *next;
-};
-
-int av_register_protocol(URLProtocol *protocol)
-{
- return ffurl_register_protocol(protocol, sizeof(struct URLProtocol_compat));
-}
-
-int register_protocol(URLProtocol *protocol)
-{
- return ffurl_register_protocol(protocol, sizeof(struct URLProtocol_compat));
-}
-#endif
-
static int url_alloc_for_protocol (URLContext **puc, struct URLProtocol *up,
const char *filename, int flags)
{
err = AVERROR(ENOMEM);
goto fail;
}
-#if FF_API_URL_CLASS
uc->av_class = &urlcontext_class;
-#endif
uc->filename = (char *) &uc[1];
strcpy(uc->filename, filename);
uc->prot = up;
return err;
uc->is_connected = 1;
//We must be careful here as ffurl_seek() could be slow, for example for http
- if( (uc->flags & (AVIO_WRONLY | AVIO_RDWR))
+ if( (uc->flags & AVIO_FLAG_WRITE)
|| !strcmp(uc->prot->name, "file"))
if(!uc->is_streamed && ffurl_seek(uc, 0, SEEK_SET) < 0)
uc->is_streamed= 1;
if (ret)
fast_retries = FFMAX(fast_retries, 2);
len += ret;
- if (url_interrupt_cb())
+ if (len < size && url_interrupt_cb())
return AVERROR_EXIT;
}
return len;
int ffurl_read(URLContext *h, unsigned char *buf, int size)
{
- if (h->flags & AVIO_WRONLY)
+ if (!(h->flags & AVIO_FLAG_READ))
return AVERROR(EIO);
return retry_transfer_wrapper(h, buf, size, 1, h->prot->url_read);
}
int ffurl_read_complete(URLContext *h, unsigned char *buf, int size)
{
- if (h->flags & AVIO_WRONLY)
+ if (!(h->flags & AVIO_FLAG_READ))
return AVERROR(EIO);
return retry_transfer_wrapper(h, buf, size, size, h->prot->url_read);
}
int ffurl_write(URLContext *h, const unsigned char *buf, int size)
{
- if (!(h->flags & (AVIO_WRONLY | AVIO_RDWR)))
+ if (!(h->flags & AVIO_FLAG_WRITE))
return AVERROR(EIO);
/* avoid sending too big packets */
if (h->max_packet_size && size > h->max_packet_size)
return AVERROR(EIO);
- return retry_transfer_wrapper(h, buf, size, size, h->prot->url_write);
+ return retry_transfer_wrapper(h, buf, size, size, (void*)h->prot->url_write);
}
int64_t ffurl_seek(URLContext *h, int64_t pos, int whence)
return ret;
}
+#if FF_API_OLD_AVIO
int url_exist(const char *filename)
{
URLContext *h;
- if (ffurl_open(&h, filename, AVIO_RDONLY) < 0)
+ if (ffurl_open(&h, filename, AVIO_FLAG_READ) < 0)
return 0;
ffurl_close(h);
return 1;
}
+#endif
+
+int avio_check(const char *url, int flags)
+{
+ URLContext *h;
+ int ret = ffurl_alloc(&h, url, flags);
+ if (ret)
+ return ret;
+
+ if (h->prot->url_check) {
+ ret = h->prot->url_check(h, flags);
+ } else {
+ ret = ffurl_connect(h);
+ if (ret >= 0)
+ ret = flags;
+ }
+
+ ffurl_close(h);
+ return ret;
+}
int64_t ffurl_size(URLContext *h)
{
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